The JBX01790 is a premium 10GBASE-ER SFP+ optical transceiver engineered for long-distance, high-speed network communications. This module exemplifies reliability and performance in demanding enterprise environments where extended reach and consistent throughput are critical requirements. **Performance & Technical Specifications:** Operating at 10Gbps data rates with IEEE 802.3ae qualification, this transceiver utilizes 1550nm wavelength transmission to achieve exceptional 40-kilometer reach over single-mode fiber. The extended range capability makes it ideal for metropolitan area networks, campus backbones, and long-distance interconnections between data centers or remote facilities. **Connector & Interface:** The Duplex LC/UPC connector provides secure, industry-standard fiber termination with minimal insertion loss. The UPC finish delivers superior optical performance and durability compared to standard connectors. The compact SFP+ form factor (5x4x2mm) enables high-density deployments in network equipment. **Compatibility & Integration:** Fully compatible with Cisco SFP-10G-ER-I equipment, this transceiver serves as a cost-effective drop-in replacement. It seamlessly integrates into existing Cisco infrastructure without requiring firmware updates or complex configuration procedures. **Safety & Compliance:** Comprehensive safety certifications include Class 1 laser designation, ensuring safe operation in managed network environments. Full RoHS/ELV compliance and EU directive 2002/95/EC adherence meet modern environmental regulations. TÜV and FDA certifications (21CFR 1040.10) validate quality and safety standards. **Environmental Performance:** With an extended operating temperature range of -40°C to 85°C, this transceiver performs reliably in diverse climatic conditions, from air-conditioned data centers to outdoor equipment enclosures. The metal case construction provides superior heat dissipation and electromagnetic shielding. **Value & Support:** Manufactured with strict quality controls, this module includes a 90-day limited warranty. Custom brand programming is available for OEM and reseller applications. Free standard shipping on orders over $99 ensures cost-effective procurement.